quiz 13

Question 1

What is dune regeneration?

Answer 1

planting grasses on dunes to help them grow in size

Question 2

Give 4 examples of hard engineering in coastal managment

Answer 2

sea walls,rock armour,gabions and groynes

Question 3

What are the 3 main types of coastal management

Answer 3

hard engineering,soft engineering and managed retreat

Question 4

What is managed retreat?

Answer 4

allowing land to become flooded and possibly washed away by erosion

Question 5

Give 2 examples of soft engineering in coastal management

Answer 5

beach nourishment and reprofilling, dune regeneration

Question 6

Give 2 advantages and 2 disadvantages of dune regeneration?

Answer 6

advantages: cheap,provides a new habitat
disadvantages: expensive,requires protecting the area from people

Question 7

Give 2 disadvantages and 2 advantages of rock armour

Answer 7

advantages: cheaper than sea walls, can become good habitats for sea life
disadvantages: expensive to transport large rocks, needs to be maintained as the rocks can move

Question 8

Give 2 advantages and 2 disadvantages of groynes

Answer 8

advantages: build beaches,protect from flooding
disadvantages: can look ugly, can stop longshore drift from occurring and so starve beaches further down the coast of sediment

Question 9

What is beach nourishment and reprofilling?

Answer 9

adding sand to a beach to increase the quantity of sediment

Question 10

Give 2 advantages and 2 disadvantages of sea walls

Answer 10

advantages: highly effective protection from erosion, can be used for pedestrians
disadvantages: very expensive,not sustainable as will still erode eventually, expensive to maintain and not attractive to tourists

Question 11

What are sea walls?

Answer 11

concrete walls placed at the foot of a cliff

Question 12

What are gryones?

Answer 12

wooden structures built at right angles to the coast to prevent longshore drift

Question 13

Give 2 advantages and 2 disadvanatages of beach nourishment and repfroliling

Answer 13

advanatges: creates wide beaches which are more protected from erosion, encourages tourism
disadvanatges: needs to be a continous process, sand often has to be brought from somewhere else

Question 14

What are gabions?

Answer 14

metal cages filled with rocks and placed in areas vulnerable to erosion

Question 15

What is rock armour?

Answer 15

Large rocks placed at the base of cliffs

Question 16

Give 2 advantages and 2 disadvantages of managed retreat

Answer 16

Advantages: cheap, can create new habitats like salt marshes

Disadvantaged: can only be carried out on low-value land, can have an effect on other neighbouring ecosystems